eostel



(No Model.)

HELD CUN CARRIAGE RECCIL CHECK. No. 597,126.`

Patented Jem. 11,1898.

(No Model.)

3 Sheets-Sheet 2y c. RosTBL. f FIELD GUN CARRIAGE RBOOIL CHECK.

No. 59u26 Patented Jamil', 1898.

@MSWI-- FIELD GUN'GA'RIAGE RBcoIL CHECK. No. 597,126.

NQ Hodel.)

- PatentedjJan. 11, 1898 firing position by causing a piston in the rethe gun again forward after each recoil. The

f which may be used in connection with the A interior of the hollow axle of the gun-carriage,

' UNITED- Sfrnrns CARL RsTEL, or BERLIN, GERMANY.

FIELD- GUNQCARRIAGE RECOILCHECK.

SPECIFICATION forming part of Letters Patent No. 597,126, dated January 11, 1898.

Application filed February 12,1897. Seriaigio. 623,161, (No model.) Patented in Germany November 24:, 18QB,N0. 94,012; in England January 11, 1897, No. 732; in France January 11,1897,llo. 262,961,8.nd in Belgium January 11, 18B7,Nc.

To all whom it may concern.:

Beit known that I, CARL RSTEL, engineer, a subject of the King of Prussia, German Emperor, residing at Friedrichstrasse 4S, Berlin, in the Kingdom of Prussia and Empire of Germany, have invented certain new and useful Improvements in Recoil-Brakes, (for which I have obtained patents in Germany,No. 94,012, dated November 24, 1895; in England, No. 732, dated January 11, 1897; in France, No. 262,961, dated January 11, 1897, and in Belgium, No. 125,900, dated January 11, 1897;) and I do hereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable-others skilled in the art to which it appertains to make and use the same. This invention relates to a recoil-brake for the gun which constitutes the means for re-4 turning the gun after firing to its initial or coil-brake cylinder to force. liquid between two spring-actuated disks or plungers in the which latter acts as an accumulator and forces said' cylinder andparts connected thereto also form the gun-carrier.

The invention is`illustrated in the accompanying drawings, in which- Figure 1 is a side elevation, partly in section, of a 'gun and gun-carriage fitted with my improvements. Fig. 2 is a plan, partly in section, of the recoil mechanism. Fig. 3 is a rear view, partly in section, of parts shown in Fig. 1; and Fig. 41s a sectional view, drawn to a larger scale, of a throttle device present invention for regulating the ac'tion of the recoil-brake. Fig. 5 is a sectional plan view of the throttle deyice. l

R is the gun, and B is the axle of the guncarriage.

D is the gun-carrier, in which the gun slides back and forth longitudinally. The gun-carrier is provided with horizontal pivots a,which are journaled in a bracket a'. The bracket c' is j ournaled on vertical pivots b,whicl1 project from the axle B.

- The gun and its carrier can be moved relatively to the gun-carriage in a vertical plane about the pivots c as a center and in a horizontal plane about the pivots b as a center.

A is a brakecylinder secured to the carrier D under the gun and parallel to it.

A is a piston which is slidable in the cylinder A and which is provided with a pistonrod 3, which is secured to the gun.

An accumulator-cylinder a is formed inside the axle B, and B' is a spring-pressed piston which is slidable in the cylinder 4.

C are the springs for moving thepiston B in one direction. The cylinder 4 is preferably provided with two similar spring-pressed pistons, but only one is shown, as the other is an exact duplicate of it in the other half of the cylinder. p nect the rear end of the brake-cylinder with the Water-space of the cylinder 4. These passages c pass through the pivots a, and the upper'pivot b and are so proportioned at the pivots that the two said cylinders are always in free communication with each otherirrespective of the motion at the pivots.l

The cylinder 4 is of much larger area than the cylinder A.

Vhen the gun is fired, the recoil forces the piston A' rearwardly, and the water behind it is forced through the' passages c into the cylinder where it operates the piston or pistons B and stores up energy by compressing the springs C. The springs C subsequently expand and drive the water in the cylinder aback into the brake-cylinder A, thereby propelling the piston A forward and returning the gun to its original position.

The gun is preferably so arranged that very little of its weight comes on the rear end portion of the gun-carriage which rests on 4the ground.

4In 'order to regulate the flowl of water through thev passages c, the said passages are' provided with two spring-actuated valves f, provided with operating-levers f'.

R is a rail secured to the lower part of they tapers from the point toits ends in any approved manner. The levers f are pressed Passages c are arranged to conv IOC toward the rail by their springs, 'When the recoil commences, the parts arein the positions indicated by the dotted lines in Fig. 5, and the openings throughv which"water may pass through the valves are verysxvnail in When the gun has partially recoiled and is moving rearwardly with the greatest velocity, the valves fare opened wide by the levers f', the ends of which are then opposite the point 7. The water-openings through the valves aregradually reduced as the velocity of the gun is reduced during the .lat-ter part 'of the recoil.

vturns on its pivots a, and Lprovided for adjusting In this' manner the action of the brake is `regulated and made constant.

A screw d\is`\ provided for adjusting the sight of the gun in a vertical plane when it a second screw his t 1e sight of the gun in a horizontal plane when it turns on the pivots b. in the gun-carriage, and the screws d and h are operated in any approved manner. The screw d is pivoted to a shaft d' by a pind. The shaft d is arranged substantially parallel with the axis of the gun, and it is longitudinally slidable and free to oscillate on its own axis in asocket i5, on the cylinder A. A slight oscillatory freedom lofamotion of the shaft d is requisite to permit-the gun to be 'sighted in a horizontaldirection. `The pin d is provided with handles d, for operating the shatt d and raising or lowering the rear end portion of the gun. When the shaft d' is/pulled rearwardly and the handlesarelet go,fthe shaft d' drops onto the stop e and the parte assume the positions indicated bydotted the accumulator-cylinder in the axle'.

lines in Fig. l, so that access to the breech of the gun. can be had. y

. l do not limit myself'to the use of a single brake-cylinder A in carrying out this invention, as'one or more brake-cylinders of any approved construction can be connected to The piston in the brake-cylindery may be of -any approved construction, asingle piston of simple forrnbeing shown in the drawings merely for the purpose yoi' illustratingone .forni of piston which may be used.

1. ln a field-gun carriage, the combination, with' a slidable gun, of an axlehaving an ac cnxnulatoncylinder formed inside it and extending nnder the gun, a recoil-brake cylin- The screw dis pivotally supported der operatively connected with the..accumu later-cylinder, and a piston slidiable in the recoilbrake cylinder and connected to the gun, substantially as set forth.

2. In a field-gun carriage, the combination, with a slidable gun, of an axle having an ac- `cumulator-cylinder formed inside it and extending under the gun, a piston slidable in the accumulator-cylinder, springs for moving the said piston in one direction, a recoil-brake cylinder operatively connected with` the accumulator-cylinder, and a piston slidable in the recoil brake cylinder and connected to the gun, substantially as set forth.

8. In a field-gun carriage, the combination,

ywith two cylinders connected by passages and .forming portions of a recoil-brake, of a dou ble-tapered rail secured to the gun, and valves arranged in the said passages and provided with operating-levers which bear against the opposite sides of the said rail andare moved simultaneously by 4it in opposite .directions when the gun recoils, so that the passages through the said valves are widest open when the velocity ofthe tially as set forth. l

4. In a iield-gun carriage, the combination, with a brake-cylinder provided with a piston operatively connected to the gun, of an axle provided with an accumulator-cylinder and vertical pivots, aspring-pressedpiston in the accum ulator-cylinder, a bracket journaled on the said pivots, and a supportvfor the'gun secured to the'sai d brake-cylinder'and providedwith horizontal pivots journaled in the said bracket, said cylinders being operatively connected by passages which extend through the said pivots, substantially as set forth.

5. In a field-gun carriage, the combination, with a cylinderformed within lthe axle of the carriage and provided with an inlet-passage at its middle part, of two's'imilar pistons slidable in the said cylinder one on each side of the said passage and forming portions of a recoil-brake, and springs in the opposite ends of the said' cylinder pressing the said pistons toward each other, substantially as set forth. ln testimony whereof I affixmy signature in presence of two witnesses. n

. CARL ROSTEL. Witnesses:

W. HAUPT, HENRY HASPER.

gun -is greatest, substanf roo 

